linux-kernel - Re: kdump broken on 2.6.37-rc4

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Date:	Thu, 16 Dec 2010 19:05:00 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Vivek Goyal <vgoyal@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Stanislaw Gruszka <sgruszka@...hat.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Maxim Uvarov <muvarov@...il.com>, linux-kernel@...r.kernel.org,
	Neil Horman <nhorman@...hat.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: kdump broken on 2.6.37-rc4

On 12/16/2010 05:51 PM, H. Peter Anvin wrote:
> Can whomever has a test case for this please test the attached test patch?
> 
it works ...

with PAGE_OFFSET=0xc0000000

'm in purgatory
bootconsole [uart0] enabled
Kernel Layout:
  .text: [0x2e000000-0x2e3f08ca]
.rodata: [0x2e3f2000-0x2e5a2fff]
  .data: [0x2e5a3000-0x2e5f6467]
  .init: [0x2e5f7000-0x2e670fff]
   .bss: [0x2e675000-0x2e76ffff]
   .brk: [0x2e770000-0x2e954fff]
    memblock_x86_reserve_range: [0x00001000-0x00001fff]    EX TRAMPOLINE
    memblock_x86_reserve_range: [0x2e000000-0x2e76ffff]    TEXT DATA BSS
    memblock_x86_reserve_range: [0x35c20000-0x35f49fff]          RAMDISK
    memblock_x86_reserve_range: [0x0009c800-0x000fffff]  * BIOS reserved
Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Linux version 2.6.37-rc5-tip+ (root@...12-3214-189-181) (gcc version 4.4.4 20100726 (Red Hat 4.4.4-13) (GCC) ) #9 SMP Thu Dec 16 08:46:56 PST 2010
KERNEL supported cpus:
  Intel GenuineIntel
  AMD AuthenticAMD
  NSC Geode by NSC
  Cyrix CyrixInstead
  Centaur CentaurHauls
  Transmeta GenuineTMx86
  Transmeta TransmetaCPU
  UMC UMC UMC UMC
BIOS-provided physical RAM map:
 BIOS-e820: [0x00000000000100-0x0000000009c7ff] (usable)
 BIOS-e820: [0x0000000009c800-0x0000000009ffff] (reserved)
 BIOS-e820: [0x000000000e0000-0x000000000fffff] (reserved)
 BIOS-e820: [0x00000000100000-0x0000007ff9ffff] (usable)
 BIOS-e820: [0x0000007ffae000-0x0000007ffaffff] (usable)
 BIOS-e820: [0x0000007ffb0000-0x0000007ffbdfff] (ACPI data)
 BIOS-e820: [0x0000007ffbe000-0x0000007ffeffff] (ACPI NVS)
 BIOS-e820: [0x0000007fff0000-0x0000007fffffff] (reserved)
 BIOS-e820: [0x000000e0000000-0x000000efffffff] (reserved)
 BIOS-e820: [0x000000fec00000-0x000000fec00fff] (reserved)
 BIOS-e820: [0x000000fee00000-0x000000feefffff] (reserved)
 BIOS-e820: [0x000000ff700000-0x000000ffffffff] (reserved)
last_pfn = 0x7ffb0 max_arch_pfn = 0x1000000
NX (Execute Disable) protection: active
user-defined physical RAM map:
 user: [0x00000000000000-0x0000000009ffff] (usable)
 user: [0x0000002e000000-0x00000035f59fff] (usable)
 user: [0x0000007ffb0000-0x0000007ffeffff] (ACPI data)
DMI present.
_brk_end: ee8e6000, __brk_limit: ee955000
_brk_end: ee8e601c, __brk_limit: ee955000
_brk_end: ee8e6024, __brk_limit: ee955000
_brk_end: ee8e6030, __brk_limit: ee955000
_brk_end: ee8e6048, __brk_limit: ee955000
_brk_end: ee8e6058, __brk_limit: ee955000
_brk_end: ee8e6060, __brk_limit: ee955000
_brk_end: ee8e607c, __brk_limit: ee955000
_brk_end: ee8e60a4, __brk_limit: ee955000
_brk_end: ee8e60bc, __brk_limit: ee955000
_brk_end: ee8e60cc, __brk_limit: ee955000
_brk_end: ee8e60e0, __brk_limit: ee955000
_brk_end: ee8e6104, __brk_limit: ee955000
_brk_end: ee8e6118, __brk_limit: ee955000
_brk_end: ee8e6130, __brk_limit: ee955000
_brk_end: ee8e6134, __brk_limit: ee955000
_brk_end: ee8e6148, __brk_limit: ee955000
_brk_end: ee8e6160, __brk_limit: ee955000
_brk_end: ee8e618c, __brk_limit: ee955000
_brk_end: ee8e61b8, __brk_limit: ee955000
_brk_end: ee8e61e4, __brk_limit: ee955000
_brk_end: ee8e6210, __brk_limit: ee955000
_brk_end: ee8e6234, __brk_limit: ee955000
_brk_end: ee8e6240, __brk_limit: ee955000
_brk_end: ee8e6254, __brk_limit: ee955000
_brk_end: ee8e6268, __brk_limit: ee955000
DMI: Sun Fire X4240/Sun Fire X4240, BIOS 080014  10/15/2008
e820 update range: [0x00000000000000-0x0000000000ffff] (usable) ==> (reserved)
e820 remove range: [0x000000000a0000-0x000000000fffff] (usable)
last_pfn = 0x35f5a max_arch_pfn = 0x1000000
MTRR default type: uncachable
MTRR fixed ranges enabled:
  00000-9FFFF write-back
  A0000-EFFFF uncachable
  F0000-FFFFF write-protect
MTRR variable ranges enabled:
  0 base 000000000000 mask FFFF80000000 write-back
  1 disabled
  2 disabled
  3 disabled
  4 disabled
  5 disabled
  6 disabled
  7 disabled
x86 PAT enabled: cpu 0, old 0x7010600070106, new 0x7010600070106
Scan SMP from c0000000 for 1024 bytes.
Scan SMP from c009fc00 for 1024 bytes.
Scan SMP from c00f0000 for 65536 bytes.
found SMP MP-table at [c00ff780] ff780
    memblock_x86_reserve_range: [0x000ff780-0x000ff78f]   * MP-table mpf
  mpc: fc4e0-fc6e4
    memblock_x86_reserve_range: [0x000fc4e0-0x000fc6e3]   * MP-table mpc
    memblock_x86_reserve_range: [0x2e770000-0x2e8e627b]              BRK



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